Shame, I just figured out how to kill Thorim solo and many attempts I ended up stuck in the tunnel with enemies immune and not hitting me. The only escape was to HS out and I was considering farming the dagger for this situation. Not worth it now on a 30min cd.

"If you aren't nostalgic of Vanilla WoW, you don't have a heart. If you want to bring it back, you don't have a brain." - Moistmuffins

Kind of annoying tbh.. Although this doesn't really make sense, it literally killed you, no fancy buff/shapeshift or anything you just died, how is that worthy of a nerf?

"Skipping repair bills" well why not just throw durability damage onto it when you die would have been much easier. There is literally no logical explanation for the nerf of this item other than "lets nerf it for the hell of it"

They made it so you can't deny another player a kill and so you can't use it to save on a repair bill when you're falling to death or taking damage more than once a second when you want to use it.
You can still use it to save on a repair bill every 2 boss fight attempts, and you can still use it for fun when you're getting ganked and get away for a measly one second to not give the guy the satisfaction.
Really, how often do you need to kill yourself? Why would you need to do it every 5 or 10 minutes?

The item completely removed repair bills from the game. Every single player would HAVE to get one. Two years later, we'd be playing in the next expansion and everyone would still have to go and farm that item because it granted you a pretty tangible benefit. No vanity item in the game is kept that powerful, or so attractive in a gameplay/balance sense.
Also... consider how odd it'd be for such a huge amount of deaths in the game to all be from the one same item, instead of... the game, the world the monsters.

People were using it in LFR so they could afk during boss fights...pretty annoying.

As much as I think that is awesome in a very terrible way cause it sucks, they could have at least changed it to not be active in lfr or even during combat..but that hotfix was pointless and sucks. I loved going up to people and just being like "guess what"..<death> and explain how wow has this terrible bug that causes me to die randomly. Was good humor, now this sucks really...

This is what I hate about Blizzard. They constantly hotfix such pointless things like this. Like was it affecting gameplay so much that they had to have a cast time on it and a longer cooldown?

Short answer, yes. Yes it was. My guildies that had gotten their hands on one pre-nerf were using it pretty close to on cooldown for progression fights, and it wasn't because it was fun, or pointless. It saves repair costs and speeds up called wipes. That's what's colloquially known as "utility', and the sole reason I went and got one for myself.